1/*
2 * Copyright (c) 2007 The Hewlett-Packard Development Company
3 * All rights reserved.
4 *
5 * The license below extends only to copyright in the software and shall
6 * not be construed as granting a license to any other intellectual
7 * property including but not limited to intellectual property relating
8 * to a hardware implementation of the functionality of the software
9 * licensed hereunder. You may use the software subject to the license
10 * terms below provided that you ensure that this notice is replicated
11 * unmodified and in its entirety in all distributions of the software,
12 * modified or unmodified, in source code or in binary form.
13 *
14 * Redistribution and use in source and binary forms, with or without
15 * modification, are permitted provided that the following conditions are
16 * met: redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer;
18 * redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution;
21 * neither the name of the copyright holders nor the names of its
22 * contributors may be used to endorse or promote products derived from
23 * this software without specific prior written permission.
24 *
25 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
26 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
27 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
28 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
29 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
30 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
31 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
32 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
33 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
34 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
35 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
36 *
37 * Authors: Gabe Black
38 */
39
40#ifndef __ARCH_X86_PAGETABLE_HH__
41#define __ARCH_X86_PAGETABLE_HH__
42
43#include <iostream>
44#include <string>
45
46#include "base/bitunion.hh"
47#include "base/misc.hh"
48#include "base/types.hh"
| 1/*
2 * Copyright (c) 2007 The Hewlett-Packard Development Company
3 * All rights reserved.
4 *
5 * The license below extends only to copyright in the software and shall
6 * not be construed as granting a license to any other intellectual
7 * property including but not limited to intellectual property relating
8 * to a hardware implementation of the functionality of the software
9 * licensed hereunder. You may use the software subject to the license
10 * terms below provided that you ensure that this notice is replicated
11 * unmodified and in its entirety in all distributions of the software,
12 * modified or unmodified, in source code or in binary form.
13 *
14 * Redistribution and use in source and binary forms, with or without
15 * modification, are permitted provided that the following conditions are
16 * met: redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer;
18 * redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution;
21 * neither the name of the copyright holders nor the names of its
22 * contributors may be used to endorse or promote products derived from
23 * this software without specific prior written permission.
24 *
25 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
26 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
27 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
28 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
29 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
30 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
31 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
32 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
33 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
34 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
35 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
36 *
37 * Authors: Gabe Black
38 */
39
40#ifndef __ARCH_X86_PAGETABLE_HH__
41#define __ARCH_X86_PAGETABLE_HH__
42
43#include <iostream>
44#include <string>
45
46#include "base/bitunion.hh"
47#include "base/misc.hh"
48#include "base/types.hh"
|
| 49#include "base/trie.hh"
|
49
50class Checkpoint;
51
52namespace X86ISA
53{
| 50
51class Checkpoint;
52
53namespace X86ISA
54{
|
| 55 struct TlbEntry;
56}
57
58typedef Trie<Addr, X86ISA::TlbEntry> TlbEntryTrie;
59
60namespace X86ISA
61{
|
54 BitUnion64(VAddr)
55 Bitfield<20, 12> longl1;
56 Bitfield<29, 21> longl2;
57 Bitfield<38, 30> longl3;
58 Bitfield<47, 39> longl4;
59
60 Bitfield<20, 12> pael1;
61 Bitfield<29, 21> pael2;
62 Bitfield<31, 30> pael3;
63
64 Bitfield<21, 12> norml1;
65 Bitfield<31, 22> norml2;
66 EndBitUnion(VAddr)
67
68 struct TlbEntry
69 {
70 // The base of the physical page.
71 Addr paddr;
72
73 // The beginning of the virtual page this entry maps.
74 Addr vaddr;
| 62 BitUnion64(VAddr)
63 Bitfield<20, 12> longl1;
64 Bitfield<29, 21> longl2;
65 Bitfield<38, 30> longl3;
66 Bitfield<47, 39> longl4;
67
68 Bitfield<20, 12> pael1;
69 Bitfield<29, 21> pael2;
70 Bitfield<31, 30> pael3;
71
72 Bitfield<21, 12> norml1;
73 Bitfield<31, 22> norml2;
74 EndBitUnion(VAddr)
75
76 struct TlbEntry
77 {
78 // The base of the physical page.
79 Addr paddr;
80
81 // The beginning of the virtual page this entry maps.
82 Addr vaddr;
|
75 // The size of the page this entry represents.
76 Addr size;
| 83 // The size of the page this represents, in address bits.
84 unsigned logBytes;
|
77
78 // Read permission is always available, assuming it isn't blocked by
79 // other mechanisms.
80 bool writable;
81 // Whether this page is accesible without being in supervisor mode.
82 bool user;
83 // Whether to use write through or write back. M5 ignores this and
84 // lets the caches handle the writeback policy.
85 //bool pwt;
86 // Whether the page is cacheable or not.
87 bool uncacheable;
88 // Whether or not to kick this page out on a write to CR3.
89 bool global;
90 // A bit used to form an index into the PAT table.
91 bool patBit;
92 // Whether or not memory on this page can be executed.
93 bool noExec;
| 85
86 // Read permission is always available, assuming it isn't blocked by
87 // other mechanisms.
88 bool writable;
89 // Whether this page is accesible without being in supervisor mode.
90 bool user;
91 // Whether to use write through or write back. M5 ignores this and
92 // lets the caches handle the writeback policy.
93 //bool pwt;
94 // Whether the page is cacheable or not.
95 bool uncacheable;
96 // Whether or not to kick this page out on a write to CR3.
97 bool global;
98 // A bit used to form an index into the PAT table.
99 bool patBit;
100 // Whether or not memory on this page can be executed.
101 bool noExec;
|
| 102 // A sequence number to keep track of LRU.
103 uint64_t lruSeq;
|
94
| 104
|
| 105 TlbEntryTrie::Handle trieHandle;
106
|
95 TlbEntry(Addr asn, Addr _vaddr, Addr _paddr);
96 TlbEntry() {}
97
98 void
99 updateVaddr(Addr new_vaddr)
100 {
101 vaddr = new_vaddr;
102 }
103
104 Addr pageStart()
105 {
106 return paddr;
107 }
108
109 void serialize(std::ostream &os);
110 void unserialize(Checkpoint *cp, const std::string §ion);
111 };
112}
113
114#endif
| 107 TlbEntry(Addr asn, Addr _vaddr, Addr _paddr);
108 TlbEntry() {}
109
110 void
111 updateVaddr(Addr new_vaddr)
112 {
113 vaddr = new_vaddr;
114 }
115
116 Addr pageStart()
117 {
118 return paddr;
119 }
120
121 void serialize(std::ostream &os);
122 void unserialize(Checkpoint *cp, const std::string §ion);
123 };
124}
125
126#endif
|